BC Racing BR Series Coilover Kit for 05-07 Impreza STI Mono-tube shock design 30 levels of damping force adjustment, adjust compression/rebound 2 axis bushings allow precise, single wrench adjustment accurately under load. Front Spring Rate: 8kg/mm Rear Spring Rate: 6kg/mm Front Camber Plates Included, Rear Camber Plates Available for Purchase Separate full length height adjustable, 1 year warranty and rebuildable